Knob attachment



(No Model.)

, O. E. STELLER. KNOB ATTACHMENT.

No. 365,878 Patented July 5, 1887.

iluirn ATTCNT FFICE.

CHARLES E. STELLER, OF MILl/VAUKEE, XVISOONSIN.

KNOB ATTACH MENT.

SPECIFICATION forming part of Letters Patent No. 365,878, dated July 5, 1887. Application filed January 1'7, 1887. Serial No. 224,557. (No model.)

To all whom it may concern..-

Be it known that I, CHARLES E. STELLER, of Milwaukee, in the county of Milwaukee and State of Wisconsin. have invented new and useful Improvements in Knob Attachments; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to theaccompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in devices for attaching the shanks of door-knobs to the respective sides of doors, and it pertains to the peculiar construction of the shank and the cscuteheon-plate by which said shank is held in place in connection with the door.

The objects of my invention are twofold first, to provide a simple and efficient device for attaching the door-knob, and, second, to provide means for adjusting the escutcheonplate, by which the knob is attached higher or lower, as may be required to conform to looks of various sizes, and to bring the keyhole of the escutcheon in line with the keyhole of the lock.

Figure 1 of the drawings represents a front view of the edges of parts of two doors in close proximity to each other, showing escutcheon-plates of a given size adjusted to looks ofdifferent dimensions. Fig. 2 represents a vertical section through a portion of the escutcheon-plate and shank. Fig. 3 represents the rear or inner view of the escutcheon-plate with the shank of the doorknob engaging therein. Fig. 4 represents a front view of the escutcheon-plate having an elongated aperture which permits the adjustment of the plate to looks of various sizes. Fig. 5 represents a non-adjustable escutcheoirplate which I is used for attaching door-knobs with locks of uniform size conforming thereto.

Like parts are represented by the same reference-letters throughout the several views.

The shank A of the door-knob is provided on its inner end with an annular groove, B, for the reception of the inner edge of the aperture E of the escutcheon-plate O, and an annular flange, D, which engages against the rear surface of the escutcheon-plate 0 when in position for use within the elongated aperture cutcheon-plate until the edge of the aperture at its smallest diameter, 3 is brought within the groove B and against the inner edge of the flange D, when the shank is held in .place upon the spindle F and prevented from being withdrawn from the escutcheon-plate by contact of said flange D with said plate.

In Fig. 5 the aperture E is long enough only to engage upon the flange D of the shank when the shank D is at the upper extremities of said aperture, there being no room alllowcd in said aperture to adjust this form of eseuteheon-plate to locks of different sizes, this form of aperture being used solely for fastening knobs to doors having locks of uniform sizes. When, however, it is desired to attach the escutcheon-plate to looks of various sizes, I use the elongated form of aperture shown in Fig. 4, which form permits said escutcheon-plate to be raised and lowered past the shank, as may be required to adjust the keyhole of the escutcheon-plate in line with the key-hole of the lock. The escutcheon-plate being pro perly adjusted with the key-hole thereof in line with the key-hole of the lock, and the inner edge of the aperture E engaging inthe groove B of the shank A, it is rigidly secured at such a point of adjustment by screws a a, or otherwise.

That part of the aperture E which proj ects below the shank with the form of plate shown in Fig. 5 is obscured from view by the rose H. The rose H is cast in one piece with the shank, as shown.

To provide for covering that part of the aperture E which, in the adjustable form of escutcheon-plate shown in Fig. 4, projects above and below the rose H, an elongated disk or plate, I, is provided, which is preferably cast in one piece with the rose H, or it may be formed in a separate piece, as shown :in Fig. 2.

It is obvious that as the spindle F is loosely fitted to the shanks, no screws or fastenings being employed, my device is adapted to fit doors of any thickness.

7 Having thus described my invention, I make no claim to the annular groove of the shank, except only as used in combination with my novel form of escutcheon-plate having a shankretaining aperture of two different diameters, 0c and 'l, as stated, the larger diameter being for the reception of the end of the shank and the smaller to engage Within such annular groove.

What I claim as new, anddesire to secure by Letters Patent, is-

I. In devices for attaching door-knobs to doors, the adjustable escutcheon-plate 0, provided with an elongated aperture, E, of two different diameters, w and 1, the larger diame ter, as, being of the same size of and adapted to admit the shank A of the door-knob, and the smaller diameter, 3 of said aperture being adapted to engage in the annular groove B of said shank, in combination with said shank A,

2. In the devices for attaching door-knobs to doors, the adjustable escutcheon-plate 0, having an elongated aperture, E, of two different diameters, 00 and y, in combination with the knob-shank A, having an annular retainjug-groove, B, rose H, rigidly affixed to said shank, and elongated plate or disk I, adapted to cover the elongated aperture E above and below said rose, all substantially as and for the purpose set forth.

In testimony whereof I aifix my signature in presence of two Witnesses.

CHARLES E. STELL'ER.

Witnesses:

J AS. B. ERWIN, O. L. HOFFMANN. 

